Playful Porpoise (Norwich, Vermont)

A Playful Porpoise (duple minor longways)
by Scott Higgs for Chris Levey
Chris Levey is long-time organizer of the Norwich, Vermont English country dance series
Tune: Hey, Nonny, Nano by Carol Compton
Caller: Barrett Grimm
Music: Carol Compton (piano), Thal Aylward (violin)
Danced at Tracy Hall in Norwich, Vermont on April 21, 2024.
Apropos the title (A Playful Porpoise), the dance includes a dolphin hey.
Not knowing the difference between a dolphin and a porpoise, I did a little research.
Porpoises and dolphins are both part of the cetacean family of marine mammals, which also includes whales. However, porpoises and dolphins are in different toothed whale families and have several physical differences:
Size: Porpoises are smaller than dolphins
Beak: Most dolphins have a beak, but porpoises do not
Teeth: Porpoises have spade-shaped teeth, while dolphins have cone-shaped teeth
Dorsal fins: Porpoises have triangular dorsal fins, while dolphins have hooked or curved dorsal fins
Body: Dolphins are generally slimmer, while porpoises are more robust
Talkativeness: Dolphins are more "talkative" than porpoises
Head: Harbor porpoises have a blunt and rounded head, while dolphins have a prominent forehead and snout.